baber/WOPTO huggingface dataset:
Patent GB-1253698-A (GB)
Title: Improvements relating to direct-current power supplies
IPC: H02M7/17
Filed: 1969-02-27
Abstract: 1253698 Supplying low-voltage D C loads INTERNATIONAL RECTIFIER CORP 27 Feb 1969 [27 Feb 1968] 10587/69 Headings H2F F9B2 F9T1 F9T6 F9SX F9N2A F9K8 F9KX F9R2C F9K2 F9R42C F9R8B and F9R38C In a supply system for a D.C. load, a number of capacitors are charged in series and then discharged in parallel through semi-conductor switches, so that the output voltage is less than the input voltage. In the circuit shown, an A.C. source is connected to terminals 10 and 11, and full-wave rectified D.C. is supplied by the circuit to the load 12. When the terminal 11 is positive, a first set of three capacitors 13, 14, 15 are charged in series through diodes 19, 20, 21. During the next half-cycle the terminal 10 becomes positive, and at a certain voltage a diode 44 breaks down, allowing current to flow through the primary winding 40 of a transformer, the secondary winding 42 of which is connected to the gate electrodes of thyristors 25, 26, 27. Thus the capacitors are able to discharge through the load 12. Also in this half-cycle, a second set of capacitors 16, 17, 18 are charged from the A.C. source and are subsequently discharged through thyristors 28, 29, 30. Hence, intermittent D.C. is applied to the load in each half-cycle of the A.C. supply. By using an input oscillator or chopper, the circuit may also be used for converting high voltage D.C. to a lower voltage D.C. supply.
Patent GB-702604-A (GB)
Title: Improvements relating to e.h.t. supply circuits for television viewing tubes
Inventor: LEE CYRIL ARTHUR
IPC: H02M3/33
Filed: 1951-05-05
Abstract: 702,604. Automatic regulation. ELECTRIC & MUSICAL INDUSTRIES, Ltd. April 30, 1952 [May 5, 1951], No. 10599/51. Class 38 (4) The output voltage of an oscillator E.H.T. supply is stabilized by using a pentode valve as the oscillator and varying the bias applied to its suppressor grid in accordance with the load. The pentode 1 has a tuned anode circuit 4, 5 coupled to the high voltage coil and rectifier 12, and coupled to a grid coil 6 so that the valve acts as a class C oscillator biased by grid current through resistor 9. This bias voltage is also applied to the suppressor grid so that as any increase in the load on the rectifier increases the damping on the oscillatory circuit and hence reduces the grid current, the reduced bias on the suppressor will tend to cause the anode to conduct more strongly to restore the output. The corresponding reduction in screen current reduces the voltage drop in the resistor 16, and the accompanying rise in screen voltage also tends to increase the anode current. It is stated that the suppressor grid may obtain its bias from the output of the rectifier 12. Specification 606,111, [Group XL (c)], is referred to.
Patent GB-712403-A (GB)
Title: Electric switch contacts
Inventor: LOWE SIDNEY ROLAND
IPC: H01H1/20
Filed: 1951-05-05
Abstract: 712,403. Switch contacts. MIDLAND ELECTRIC MANUFACTURING CO., Ltd. April 28, 1952 [May 5, 1951], No. 10624/51. Class 38(5) The contact comprises a bar a, an insulating support c having a flat upper surface against which bar a bears, a spring-loaded plunger d slidable in a recess in the support, and a catch piece j pivotally connected to the outer end of the plunger, the bar a having a slot through which the plunger and catch piece are passed, the catch piece then being turned from the Fig. 4 position to that of Fig. 5 to lock the bar in position. The contact bar may be attached to a movable member of an electromagnet or may be fixed.
Patent GB-1515422-A (GB)
Title: Fungicide
IPC: A01N43/78
Filed: 1976-03-17
Abstract: 1515422 Captafol/thiabendazol mixtures CONSORTIUM FUR ELEKTROCHEMISCHE INDUSTRIE GmbH 17 March 1976 [3 April 1975] 10677/76 Heading A5E A fungicide mixture comprises from 50 to 90 % by weight of N-(1, 1, 2, 2-tetrachloroethylthio)-3a, 4, 7, 7a-tetrahydrophthalimide and from 50 to 10 % by weight of 2-(thiazol- 4-yl)-benzimidazole, based on the total weight of the two components. A fertilizer and a herbicide also may be present. The mixtures find application in combating fungi on crops, e.g. cereals.
Patent GB-1343610-A (GB)
Title: Process for the production of terephthalic acid polyesters having improved properties
IPC: C08G63/20
Filed: 1971-04-22
Abstract: 1343610 Polyesters BAYER AG 22 April 1971 [22 April 1970] 10727/71 Heading C3R Polyesters are produced by polycondensing terephthalic acid or an alkyl ester thereof with a diol and 0À03 to 10% by weight, based on terephthalic acid or alkyl ester thereof, of an aliphatic or cycloaliphatic polyhydric alcohol partially esterified with a saturated fatty acid and containing two free OH groups. The examples describe polyesters derived from dimethyl terephthalate, ethylene glycol and glycerol monostearate, pentaerythritol distearate and trimethylol cyclohexane monostearate. Polyesters having a melt viscosity of from 500 to 2000 poises at 280 C. comprising units of the formula in which R 1  is a C 1-8  alkylene radical, and 0À02 to 12 mol. per cent, based on the polyester, of units of the formula in which R 2  is a linear or branched aliphatic or cycloaliphatic radical having a functionality of 2 + n, R 3  is H or a C 1-19  alkyl radical, and n is an integer from 1 to 6 are claimed per se.
Patent GB-151562-A (GB)
Title: Improvements in brush gear for dynamo electric machines
IPC: H02K5/14
Filed: 1920-04-17
Abstract: 151,562. East Anglian Engineering Co., and Waters, H. C. April 17, 1920. Brush-holders.-A brush-gear for dynamo-electric machines comprises two rings a, b of good conducting material such as aluminium, each ring having brackets c formed integrally therewith and spindles d carried by the brackets for supporting the brush-holders. The brackets c may be perforated to receive the spindles d, or they may be formed with slots so as to permit the brush-holders to be adjusted radially. The rings are secured together and to an end bearing plate by bolts, the rings being insulated from each other and from the end plate and bolts. Each ring is formed with a lug c for the attachment of a connecting lead.
Patent GB-234967-A (GB)
Title: Improvements in and relating to cupola furnaces
IPC: F27B1/16
Filed: 1924-05-01
Abstract: 234,967. Vanderstein, E. May 1, 1924. Cupola furnaces.-In a cupola furnace having inlet and outlet openings so arranged in opposed sets that the direction of the draught across the furnace can be reversed, the openings are distributed around the whole periphery of the shaft. In the furnace shown four groups of openings 1 - - 4 are arranged in upper and lower rings, and are so controlled that when the blast is supplied through one or other of the lower groups 1, 2 the gases are exhausted through the opposed group 4 or 3 at the upper level. If it is desired to force combustion all the inlet and outlet openings may be put into operation simultaneously. The groups of openings are connected to corresponding damper-controlled inlet and outlet chambers 5, 6, 11, 12, and each group may comprise two or more, rows of openings. In a modification two groups of opposed openings in the same plane function alternately as inlets and outlets. The openings may pass through the furnace wall at any desired angle, and some of them may be extended to form observation passages.
Patent GB-325737-A (GB)
Title: Improvements in and relating to force feed fuel supply systems for internal combustion engines
IPC: F02B1/00
Filed: 1929-04-08
Abstract: 325,737. Barlow, L. P. Dec. 10, 1928, [Convention date]. Priming.-In a force-feed fuel supply system for internal-combustion engines, comprising a pump 6 which pumps the fuel from a tank 5 to the carburetter 2, the fuel passes through a chamber 9 arranged between the pump and carburetter and connected by a passage 12 with the suction side of the engine. The pasage 12 is controlled by a valve 17 carried by a float 15 which closes the passage 12 when the chamber 9 is filled with fuel. If, on starting the engine, the system is empty, the engine suction, acting through the pipes 12, 8, draws fuel from the tank 5 into the pump and chamber 9 until the float 15 closes the valve 17. In another form, the chamber 9 is below the level of the carburetter and is connected to the engine induction by a pipe. In both forms, a non-return valve is arranged between the chamber 9 and the carburetter to prevent the suction of the engine from reaching the latter during the priming operation.
Patent GB-315680-A (GB)
Title: Improvements in propellers for flying machines
IPC: B64C11/44
Filed: 1928-04-13
Abstract: 315,680. Steinmetz, B. J. April 13, 1928. Screw propellers.-A variable-pitch propeller is provided with a rheostat coil operated in unison with the blades to vary the resistance of a circuit which includes visual means for indication of the pitch of the blade. The blades of propeller carry worm gear which is driven by bevel and worm gear from electric motors for the purpose of varying the pitch. On the blade root is a rheostat coil 45 with connections 46, 49 to slip rings 47, 48 on the boss. These co-operate with connections on the engine casing which lead to an indicator device 56 having also a lamp 58 in the circuit. In the modification Fig. 4, a transverse shaft 32 co-operating with screws 33 engage nuts 35 having spigoted projections taking on to the roots of the blades.
Patent GB-833956-A (GB)
Title: A device for tapping fused material of high temperature from a crucible
IPC: F27D3/15
Filed: 1958-04-08
Abstract: 833,956. Crucibles. GERAETEBAUANSTALT. April 8, 1958 [April 19, 1957], No. 11018/58. Class 82(1) [Also in Groups XII and XXII] In a device for tapping a melt 3 at high temperature, e.g. molten metal, from a crucible 2 having a tapping hole in its bottom and a separately heatable tapping funnel 7 in continuation of the said hole, separate means are provided for obturating the hole from above and the lower orifice of the tapping funnel. The crucible 2 (with the coil 4) and the funnel 7 are carried in a frame 5 by ceramic plates 6 and 9, stiffening ribs 18 and 19 being around the coils 8 and 4 respectively, the assembly being closed by electrically non- conductive rings 20 and 21. The crucible and funnel wall is asbestos on the outside and refractory material such as magnesium oxide, tamped in on the inside before sintering the whole. A plug 25 immersible into the melt 3 and a slider plate 10 may obturate the said hole and the lower orifice respectively. The lower orifice may alternatively be obturated by a plug, which may be surrounded by an integral pan of high temperature material, preferably graphite. The plug 25 may be withdrawn completely from the melt, if desired, by means of a rod 24 passing through a vacuum-tight seal 26 with casing 1 which may be filled with a protective gas. The slider plate 10, or plug used in its place, may have heating or cooling means. To melt down the first charge (the plug 25 being then completely withdrawn) by the current in the induction coil 4, the crucible 2 can be closed by a slider plate 10 operated by an arm 12, shaft 13, bevel gears 14 and 15 and a shaft 17 passing through a seal 16, the melt solidifying on the cold slider plate 10 and the cooled walls of the funnel, to form a stopper therein. After melting is completed, addition of alloy constituents, degassing or like treatment, the slider plate 10 is swung away and the stopper melted by the induction coil 8. To regulate or stop the jet while pouring, e.g. into a chill mould 22, the orifice is suitably obturated by the plug 25. A last portion of the melt is solidified in the funnel 7 to form a stopper for the next charge, the plate 10 is swung away and the crucible 2 is recharged for a new melt. The furnace may be open and/or have a different kind of heating. Specification 812,216 is referred to.
Patent GB-769273-A (GB)
Title: Halogenated carbanilides and compositions containing the same
IPC: C07C275/30
Filed: 1955-04-18
Abstract: The invention comprises halogenated urea derivatives of the formula <FORM:0769273/IV(b)/1> in which X1 and X11 are chlorine or bromine atoms and R is a mono- or polyhalogenated aromatic or unsaturated aromatic hydrocarbon group, obtainable by the reaction between the corresponding dihalogenated aniline and an isocyanate of R, defined as above, or by the reaction between a dihalogenated isocyanate and the amine RNH2; also compositions of the above products with a major proportion of a detergent soap.  In examples, the 4 : 31 : 41-trichlorcarbanilide, and the corresponding 4-chloro-31 : 41-dibromo-, 2 : 31 : 41 - trichloro, 3 : 31 : 41 - trichloro -, 3 : 31 - dichloro - 41-bromo-, 3 : 4 : 31 : 41 - tetrachloro-, 3 : 4 : 5 : 31 : 41-pentachloro, and other similar products are produced by reaction between the suitably halogenated isocyanate and aniline. Compounds of the formula <FORM:0769273/IV(b)/2> in which the group R11 is a monochlorinated monocyclic aromatic hydrocarbon group free from ortho substituents are particularly useful in soap compositions. Other groups specified for R include chloromethylphenyl-, other chloroalkylphenyl-, substituted diphenylyl-, chloroindenyls and chloronaphthyls, containing not more than 3 halogens preferably and preferably having 2- and 6-positions unsubstituted.ALSO:Antiseptic soap compositions contain a minor proportion of a halogenated carbonilide of the formula: <FORM:0769273/III/1> in which X1 and X11 are chlorine or bromine atoms and R is a mono- or polyhalogenated aromatic or unsaturated aromatic group (see Group IV(b)).  Colours, antioxidants, perfumes, water-softeners and emollients may be added, and the compositions may be used as shampoos, shaving-creams, hand-lotions and face-creams.
Patent GB-261699-A (GB)
IPC: B65H67/04
Filed: 1926-04-28
Abstract: 261,699. Drieux, M. Nov. 20, 1925, [Convention date]. Coilers.-In an arrangement for use with carding, drawing, combing and other preparing or spinning machines in which the filled cans are automatically replaced by empty cans and the sliver is prevented from rising above the edge of the can by automatically actuated rammers the plate 5, Fig. 1, carrying the cans 7, 7<1> is actuated through gearing 21, 22, 23 from a shaft 20, which derives its motion from a pulley 17 operated by a falling weight 18. The delivery roller 3 drives through worm gearing a wheel 14 having a plain section 15. The wheel 14 is normally in gear with a pinion 16 on the shaft of the pulley 17 and winds up the weight 18. When the plain section 15 comes round the pinion 16 is freed and the weight 18 falls rotating the pulley and the shaft 20. The plate 5 is thus turned through a half rotation. At the bottom of its fall the weight 18 depresses a rod 25 against the action of a spring and brings it into position to engage a stop 24 on the gear 21. The cans are given a reciprocating movement about their axes 47 by racks 42 engaging pinions 44 connected by gearing with the plate, 6, 6<1> on which the cans are placed. The racks are reciprocated by a doublethreaded screw driven from a central shaft 33, which is rotated by bevel gearing 31, 32 from a shaft 27 connected bv a chain 29 with the shaft 4 which drives the delivery roller 3. The rammers 53 are carried by arms 52 on a sleeve 51 which slides on a tube 49. Thev are counterbalanced by a weight 62 inside the tube and connected by cords 61 to the arms. The sleeve 51, Fig. 4, is slotted and carries a pawl 58 adapted to engage a rack 56 on the tube. 49. The tube 49 is reciprocated by a double threaded screw 48 on the shaft 33. When in their descent the rammers 53 encounter the resistance of the sliver in the cans the pawl 58 clips over one or two teeth on the rack 56. The pawl 58 can be released by hand to allow the initial setting of the sleeve 51.
Patent GB-1335804-A (GB)
Title: Test circuit for testing the accuracy of operation of a circuit that carries a colour television signal
IPC: H04N17/02
Filed: 1972-03-10
Abstract: 1335804 Colour television circuit testing TEKTRONIX Inc 10 March 1972 [17 March 1971] 11256/72 Heading H4F To test the accuracy of operation of a circuit used to carry colour television signals, a phase modulated carrier signal is amplitude modulated by a test sine wave in the circuit under test and passed through a summing amplifier in which the amplitude modulation signal is added to the modulated signal. The lower boundary of the resulting test pattern displayed on an oscilloscope screen is straight only if the modulating circuit is operating accurately. Inaccuracies which can be detected include incorrect luminance/chrominance amplitude ratio, delay difference between luminance and chrominance, and signal clipping. The production of the modulation test signal 17, a single sine wave of 5 microseconds duration starting and ending at adjacent negative peaks, is triggered at the same point in each line scan by pulse 32. In addition a pulse 34 is produced which is used to form a voltage ramp 26 starting at the end of the field blanking interval and ending at the start of the next field blanking interval. Carrier wave 24, preferably at the chrominance subcarrier frequency is phase shifted by the ramp signal and is then amplitude modulated in balanced modulator 14 by modulation test signal 17 to produce an output 35. Sine wave 40, identical to sine wave 17, is added in running amplifier 18 and eliminates the negative portion of the envelope. Output 20 appears as shown at 22 if the modulating circuit operates correctly. Envelope 36<SP>1</SP> becomes filled with carrier traces during successive line scans, accentuating the lower boundary 38<SP>1</SP>. The phase shift circuit 10 may comprise a pair of resistors 44, 46 each connected through a parallel arrangement of a voltage variable capacitor 50, 58 and an inductor 48, 54 to ground, by way of large D.C. blocking capacitor 52. The ramp signal 26 is applied to the junction between the capacitors 50, 58 and 52. Preferably the phase is shifted between points equally below and above zero phase shift. The output is amplified and limited and is then passed to a sine wave regenerator 62.
Patent GB-1155806-A (GB)
Title: Improvements in or relating to Colour Television Receivers
IPC: H04N9/71
Filed: 1968-03-08
Abstract: 1,155,806. Colour television. BLAUPUNKTWERKE G.m.b.H. 8 March, 1968 [10 March, 1967], No. 11305/68. Heading H4F. Specification describes a colour killer circuit wherein positive feed-back from the controlled chrominous amplifier 1, Fig. 1, to the colour burst detection and control signal generating means 10, causes the response of the circuit, i.e. variation of chrominous signal current ic with the negative output U R  of the colour burst discriminator, to change from 31, Fig. 3, to 32. Ideally, to increase stability the arrangement should be such that (U R  colour on, to colour off 33) is less than (U R  colour off, to colour on). In the arrangement of Fig. 1, with an established chrominous signal the discriminator produces a large output U R  and transistor 10 is held off and the chrominous signal passes through transistor 1 and transformer 5 to demodulating circuits. When the chrominous signal and colour burst level falls, however, the corresponding fall in U R  causes transistor 10 to conduct and the potential on the base of transistor 1 falls. The resulting fall in current through transistor 1 causes the potential across resistor 11 to fall and the base emitter potential of transistor 10 to rise. An avalanche effect is thus produced causing a rapid switch over of the circuit. A thermionic valve equivalent embodiment is shown in Fig. 2 (not shown), and Fig. 4 (not shown), shows a preformed embodiment with valued components and incorporating the transistor chrominous amplifier of Fig. 1 and the valve control signal generating means of Fig. 2.
Patent GB-352102-A (GB)
Title: Improvements in and relating to electric contacts
IPC: H01R13/02
Filed: 1930-04-09
Abstract: 352,102. Plug and socket couplings. COOK, C. R., 254, Vauxhall Bridge Road, London. April 9, 1930, No. 11324. [Class 38 (i).] A socket of a plug and socket coupling of the type in which slots are cut in the walls of a sleeve, some of the portions between the slots being bulged inwardly to allow the plug to be gripped, has the slots cut at an angle to the axis of the sleeve; the slots extending, preferably, for the major part but not for the whole length of the sleeve. The slots and bulges are produced by suitable means and the sleeve may be screw-threaded externally. The ends of the socket sleeve may be anchored. The plug member 20, Fig. 5, may be supported in an insulating sleeve 37 and the socket 34 in a second insulating sleeve 36 sliding within the plug-supporting sleeve. The socket may be formed from a metal stamping, Fig. 2, by rolling, alternate sections 34 being pressed inwardly. A double flange for mounting the socket on a panel is formed by bending the stamping about the dotted lines. The edges of the slots scrape the plug and clean it.
Patent GB-1129091-A (GB)
Title: Improvements in or relating to crank arms for linkages
Inventor: WOOD ROBERT SPURGEON
IPC: F16C3/28
Filed: 1965-03-17
Abstract: 1,129,091. Adjustable throw cranks; locking nuts. PLESSEY-UK Ltd. 4 March, 1966 [17 March, 1965], No. 11328/65. Headings F2H and F2K. [Also in Division E2] To adjust the length of a crank-arm comprising a part 4b having a stem 15 received in an axial bore of a longitudinally split portion 13, 14 of a part 4a, a diametrical pin J projecting from the stem 15 through longitudinal slots 16 in the part 4a to engage in an internal annular groove 17 of a nut E on the externally threaded portion 13, a clamp C on the portion 14, which causes the two halves of the portion 14 to grip the stem 15 firmly, is slackened and the nut E is turned to cause relative axial movement between the parts 4a, 4b, a click stop device in the nut providing audible and tactile indication of the number of turns of the nut. The clamp C is prevented from turning relative to the part 4a by a radial pin D. The part 4a has a shell A adapted to be clamped to a fulcrum shaft, and the part 4b has an eye B adapted to be connected to a link (3) of a motion transmitting linkage (Fig. 1, not shown). The click stop device comprises an annular plate (G) secured in the nut (E), (Figs. 4, 5, not shown) and having radial recesses (19) engaged by diametrically opposed detents (22) of an annular spring (F) which is held against rotation by the engagement of inward projections (24) in the longitudinal slots (16) of the part (4a).
Patent GB-763238-A (GB)
Title: Improvements in and relating to display trays, letter trays and the like
Inventor: GOULDING ERNEST HENRY
IPC: A47B55/02
Filed: 1953-04-24
Abstract: 763,238. Stands. HALL & GOULDING (BOGNOR), Ltd., and ACRO MARKETING CO., Ltd. July 26, 1954 [April 24, 1953], No. 11414/53. Class 52 (3). Trays adapted to be arranged in superposed relation to form a display stand have dependent legs 2 of wire bent to V form and sockets 9 to receive the legs of the superposed tray, the legs having shoulders or abutments 8 to limit their entry into the sockets and being normally slightly splayed outwardly so that they are under stress when inserted into the respective sockets of a lower tray. Spacing members 10, Fig. 3, serving as leg extensions, with sockets 9a and abutments 8a can be used at one or both ends of a tray.